Ferroli RXA-I PLUS Series

Questions and Answers

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Jordan RamosSep 23, 2025
What causes high temperature protection of refrigerant outlet temp of condenser in Ferroli RXA-I PLUS Heat Pump?
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  Donna GriffithSep 23, 2025
  High temperature protection of refrigerant outlet temp of condenser in your Ferroli Heat Pump can occur if the heat exchanger cover is not removed, so remove it. The heat exchanger might be dirty or blocked, so clean the heat exchanger or remove any obstructions. If there is no enough space around the unit for heat exchanging, there is no suggested solution. The fan motor might be broken, so replace it.
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Jared MccoyAug 23, 2025
What to do if my Ferroli RXA-I PLUS displays a flow switch error (E8)?
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  smithkimberlyAug 23, 2025
  If your Ferroli Heat Pump is displaying a flow switch error (E8), it could be due to a few reasons. First, check if the wire circuit is short-circuited or open and reconnect the wire correctly. Also, the water flow rate may be too low. Finally, the water flow switch might be failing, or opening and closing continuously, in that case change the water flow switch.
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Frank BrownAug 25, 2025
What causes high pressure protection in Ferroli RXA-I PLUS and how to fix it?
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  Brianna WeissAug 26, 2025
  High pressure protection in your Ferroli Heat Pump can be triggered by several factors: low water flow or high water temperature, or air in the water system, in this case release the air. If the water pressure is lower than 0.1Mpa, charge the water to let the pressure in the range of 0.15~0.2Mpa. If the refrigerant volume is overcharged, recharge the refrigerant to the correct volume. If the electrical expansion valve is locked or the winding connector is loose, tap the valve body and plug the connector in and out several times and install the winding correctly. Ensure the heat exchanger cover is removed. Clean the heat exchanger if it's dirty or blocked.
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David BruceAug 27, 2025
What does it mean when my Ferroli RXA-I PLUS shows 'Communication error between wired controller and unit'?
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  pstewartAug 27, 2025
  A communication error between the wired controller and the unit in your Ferroli Heat Pump can occur if the wire isn’t connected between them, so connect the wire. If the communication wire sequence is incorrect, reconnect the wire in the right sequence. Also, high magnetic fields or power interference from sources like lifts or large power transformers might be the cause. In this case, add a barrier to protect the unit or move it to another location.
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Vincent GrantAug 27, 2025
How to troubleshoot a phase sequence fault on a three-phase Ferroli RXA-I PLUS?
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  Tiffany MunozAug 27, 2025
  To troubleshoot a phase sequence fault on your three-phase Ferroli Heat Pump, first check that the power supply cables are connected stably to avoid phase loss. Also, check the power supply cables sequence and change any two cables sequence of the three power supply cables.
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Karen JohnsonSep 15, 2025
Why is my Ferroli Heat Pump showing 'High discharge temperature protection'?
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  Daniel WarrenSep 15, 2025
  High discharge temperature protection in your Ferroli Heat Pump can be triggered by the same reasons as P1. The system may also lack refrigerant volume, so charge the refrigerant to the correct volume. Additionally, the Twout, T1, or T5 temp sensors might be loose, so reconnect them.
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Andrea ObrienSep 12, 2025
What does it mean if my Ferroli RXA-I PLUS Heat Pump displays 'The indoor temperature sensor(Ta) error'?
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  Kathleen HernandezSep 12, 2025
  If your Ferroli Heat Pump displays 'The indoor temperature sensor(Ta) error', the Ta sensor might be in the interface. Also, the Ta sensor might be faulty, in that case change a new sensor or change a new interface.
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Ryan RoblesSep 14, 2025
What does it mean if my Ferroli RXA-I PLUS displays 'Pressure sensor failure Pe'?
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  alvarezlindaSep 14, 2025
  If your Ferroli Heat Pump displays 'Pressure sensor failure Pe', the pressure sensor connector might be loose, so reconnect it. Also, the pressure sensor might be faulty, in that case change a new sensor.
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Christopher McintyreSep 5, 2025
What does it mean if my Ferroli RXA-I PLUS Heat Pump displays 'The backup heater exchanger outlet water temperature sensor (T1) error'?
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  Alfred ElliottSep 5, 2025
  If your Ferroli Heat Pump displays 'The backup heater exchanger outlet water temperature sensor (T1) error', it could be due to a few reasons. Check if the T1 sensor connector is loose and reconnect it. If the T1 sensor connector is wet or has water in it, remove the water, dry the connector, and apply waterproof adhesive. If the T1 sensor is faulty, replace it with a new sensor.
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shane37Sep 2, 2025
What to do if my Ferroli Heat Pump displays 'The system outlet water temperature sensor T1B failure'?
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  bwashingtonSep 2, 2025
  If your Ferroli Heat Pump displays 'The system outlet water temperature sensor T1B failure', it could be due to a few reasons. Check if the T1B sensor connector is loose and reconnect it. If the T1B sensor connector is wet or has water in it, remove the water, dry the connector, and apply waterproof adhesive. If the T1B sensor is faulty, replace it with a new sensor.

Summary

CONTROL SYSTEM

Wire Control Device and Basic Operations

Explains the wire control device, its icons, home page, screen unlock, and basic ON/OFF and temperature adjustments.

Advanced Operation Modes and Settings

Details setting operation modes, navigating menus, preset and weather temperatures, and eco/comfort modes.

Domestic Hot Water and Scheduling

Covers Domestic Hot Water functions, pump operation, disinfection, and timer/weekly scheduling.

System Options and Vacation Modes

Explains system options like silent mode, holiday functions, and child lock for security.

Service Information

Service Call and Error Code Lookup

Information on contacting service and checking error code meanings.

Parameter and Display Settings

Reviewing operational parameters and configuring display settings.

Operation Parameter

Viewing System Parameters

Details on accessing and understanding various system operational parameters.

Serviceman Mode Access

Information on accessing the password-protected Serviceman mode for advanced settings.

Error Code and Troubleshooting

Error Code Listing and Corrective Actions

A comprehensive list of error codes, their causes, and recommended corrective actions.

Ferroli RXA-I PLUS Series Specifications

General

Type	Air-to-water heat pump
Refrigerant	R32
Energy Efficiency Class (Heating)	A+++
Energy Efficiency Class (Cooling)	A++
Max. Water Temperature	60°C
Power Supply	230V/1Ph/50Hz
Operating Mode	Heating/Cooling